The optical transmission platform based on new plug-in structure is researched. The embedded controller management mode is used to solve the problems of platform universality and extensibility. Using metal structure to shield electromagnetic radiation and the communication and electronic control failure caused by external electromagnetic interference source radiation and radiation interference between modules inside the platform are solved. At the same time, reasonable heat dissipation design is utilized to achieve the thermal balance in a short time, so as to solve the problem that the performance of optical components changes due to temperature changes. The performance testing shows that the optical transmission platform is convenient to use and maintain, has excellent electromagnetic shielding performance, and the internal thermal balance time of the platform is less than 15 minutes, which meets the requirements of practical industrial applications.